390
FNCA52 TJSJ 260805
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
405 AM AST TUE MAY 26 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-262015-
SOUTHEAST COASTAL PLAINS-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 60 60 60
TEMP (24H TREND) 87 (0) 73 (-1) 88
RH % (24H TREND) 56 (+2) 91 (+2) 57
WIND 20FT/EARLY(MPH) E 16 G23 E 12 E 13 G21
WIND 20FT/LATE(MPH) E 16 G23 E 10 E 16 G24
MIXING HGT(FT-AGL/MSL)4500 4540
TRANSPORT WND (MPH) E 21 E 16
VENT RATE (KT-FT) 81000 63560
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-262015-
SOUTHERN HILLS-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 40 50
TEMP (24H TREND) 84 (+1) 70 (-2) 84
RH % (24H TREND) 69 (+5) 98 (+3) 68
WIND 20FT/EARLY(MPH) E 16 E 13 E 13
WIND 20FT/LATE(MPH) E 14 E 13 E 14
MIXING HGT(FT-AGL/MSL)4970 5190
TRANSPORT WND (MPH) E 21 E 16
VENT RATE (KT-FT) 89460 72660
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-262015-
NORTH COASTAL PLAINS-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 60 30 50
TEMP (24H TREND) 86 (0) 73 (-1) 86
RH % (24H TREND) 69 (+4) 98 (+3) 70
WIND 20FT/EARLY(MPH) E 19 E 17 E 16
WIND 20FT/LATE(MPH) E 20 E 13 E 19
MIXING HGT(FT-AGL/MSL)3950 4080
TRANSPORT WND (MPH) E 21 E 17
VENT RATE (KT-FT) 71100 61200
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-262015-
NORTHERN HILLS-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 60 20 70
TEMP (24H TREND) 84 (-2) 70 (-2) 86
RH % (24H TREND) 71 (+9) 99 (+2) 72
WIND 20FT/EARLY(MPH) E 17 E 13 E 14
WIND 20FT/LATE(MPH) E 18 E 10 E 18
MIXING HGT(FT-AGL/MSL)4880 5000
TRANSPORT WND (MPH) E 17 E 14
VENT RATE (KT-FT) 73200 60000
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-262015-
WEST COAST-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 20 60
TEMP (24H TREND) 89 (0) 73 (0) 89
RH % (24H TREND) 65 (+4) 96 (+3) 66
WIND 20FT/EARLY(MPH) E 17 E 14 E 13
WIND 20FT/LATE(MPH) E 17 E 11 E 14
MIXING HGT(FT-AGL/MSL)4400 4640
TRANSPORT WND (MPH) E 15 E 12
VENT RATE (KT-FT) 57200 46400
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-262015-
EASTERN INTERIOR-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 40 60
TEMP (24H TREND) 84 (0) 71 (-1) 84
RH % (24H TREND) 72 (+5) 99 (+1) 72
WIND 20FT/EARLY(MPH) E 17 E 14 E 14
WIND 20FT/LATE(MPH) E 17 E 14 E 16
MIXING HGT(FT-AGL/MSL)4080 4430
TRANSPORT WND (MPH) E 20 E 17
VENT RATE (KT-FT) 69360 66450
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-262015-
LUQUILLO MOUNTAIN RANGE-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 60 50 60
TEMP (24H TREND) 81 (+2) 69 (-1) 81
RH % (24H TREND) 75 (+2) 100 (+1) 74
WIND 20FT/EARLY(MPH) E 14 E 12 E 12
WIND 20FT/LATE(MPH) E 14 E 11 E 13
MIXING HGT(FT-AGL/MSL)3290 3300
TRANSPORT WND (MPH) E 22 E 18
VENT RATE (KT-FT) 62510 52800
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-262015-
CENTRAL MOUNTAIN RANGE-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 60 10 50
TEMP (24H TREND) 84 (+2) 67 (-3) 84
RH % (24H TREND) 72 (+8) 99 (+3) 72
WIND 20FT/EARLY(MPH) E 11 E 11 E 10
WIND 20FT/LATE(MPH) E 12 E 9 E 10
MIXING HGT(FT-AGL/MSL)5770 5930
TRANSPORT WND (MPH) E 16 E 12
VENT RATE (KT-FT) 80780 59300
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-262015-
CAYEY MOUNTAIN RANGE-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 60 60 60
TEMP (24H TREND) 80 (0) 70 (0) 80
RH % (24H TREND) 78 (+8) 100 (0) 77
WIND 20FT/EARLY(MPH) E 13 E 11 E 12
WIND 20FT/LATE(MPH) E 13 E 11 E 13
MIXING HGT(FT-AGL/MSL)3610 4020
TRANSPORT WND (MPH) E 21 E 18
VENT RATE (KT-FT) 64980 64320
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-262015-
VIEQUES-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40 50
TEMP (24H TREND) 86 (0) 75 (-1) 87
RH % (24H TREND) 65 (0) 91 (-1) 62
WIND 20FT/EARLY(MPH) E 20 E 18 E 17
WIND 20FT/LATE(MPH) E 19 E 17 E 18
MIXING HGT(FT-AGL/MSL)3250 2720
TRANSPORT WND (MPH) E 28 E 22
VENT RATE (KT-FT) 78000 51680
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-262015-
CULEBRA-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 40 40
TEMP (24H TREND) 88 (+1) 76 (-1) 88
RH % (24H TREND) 62 (-5) 91 (+1) 61
WIND 20FT/EARLY(MPH) E 20 E 18 E 18
WIND 20FT/LATE(MPH) E 19 E 17 E 18
MIXING HGT(FT-AGL/MSL)3320 2830
TRANSPORT WND (MPH) E 28 E 22
VENT RATE (KT-FT) 79680 53770
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-262015-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 30 50
TEMP (24H TREND) 89 (0) 74 (-1) 90
RH % (24H TREND) 54 (+3) 88 (+1) 54
WIND 20FT/EARLY(MPH) E 20 G30 E 17 G24 E 16 G24
WIND 20FT/LATE(MPH) E 20 G30 E 16 E 17 G26
MIXING HGT(FT-AGL/MSL)4750 4850
TRANSPORT WND (MPH) E 24 E 17
VENT RATE (KT-FT) 99750 72750
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-262015-
SAINT THOMAS AND SAINT JOHN-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS TSTMS SHOWERS
CHANCE PRECIP (%) 30 50 30
TEMP (24H TREND) 86 (+2) 75 (-2) 86
RH % (24H TREND) 65 (-5) 94 (+5) 63
WIND 20FT/EARLY(MPH) E 20 E 19 E 18
WIND 20FT/LATE(MPH) E 19 E 18 E 18
MIXING HGT(FT-AGL/MSL)3270 2910
TRANSPORT WND (MPH) E 26 E 23
VENT RATE (KT-FT) 75210 58200
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-262015-
ST CROIX-
405 AM AST TUE MAY 26 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 40 50
TEMP (24H TREND) 86 (+1) 75 (-1) 87
RH % (24H TREND) 68 (-2) 91 (-2) 66
WIND 20FT/EARLY(MPH) E 19 E 18 E 17
WIND 20FT/LATE(MPH) E 18 E 17 E 17
MIXING HGT(FT-AGL/MSL)3690 4040
TRANSPORT WND (MPH) E 24 E 22
VENT RATE (KT-FT) 77490 76760
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page